Merge changes I017d3528,Ie5444041,Iff873784,I1049176a,I8575df02, ...

* changes:
  wifi(implementation): Load wifi driver on IWifi.start()
  wifi(implementation): Different names for concurrent ifaces
  wifi(implementation): Add iface combo for 2018
  wifi(implementation): Unit tests for V1 & V2 iface combos
  wifi(implementation): Add unit test framework
  wifi(implementation): Support multiple ifaces of same type